Katy Perry: I Saved Russell Brand From Being a "Prostitute"

When she first met fiance Russell Brand, Katy Perry made quite an impact -- literally.

"I was 25, 30 feet away from him. And I threw the bottle straight at him. Hit him smack dab on the head," she tells the August issue of Esquire. "Can you imagine the horrible feeling he had, when he was used to getting everything he wanted? I was like, 'You've met your match.'"

She takes credit for helping Brand, a former drug and sex addict, tame his wild ways.

Says the singer: "He used to basically be a professional prostitute – now he's not. He's an extremist, which can be both good and bad. I always needed someone stronger than me and I am, like, a f****** strong elephant of a woman. I say that hopefully in the humblest way I can."